2. 外语
  3. Obesity (肥胖) has become an epidemic. Not only does Obesity have more【C1】______ health consequences than smoking, drinking, or po

Obesity (肥胖) has become an epidemic. Not only does Obesity have more【C1】______ health consequences than smoking, drinking, or po

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问题     Obesity (肥胖) has become an epidemic. Not only does Obesity have more【C1】______ health consequences than smoking, drinking, or poverty, it also affects more people【C2】______ 23 percent of Americans are obese. An additional 36 percent are overweight. By contrast, only 6 percent are heavy drinkers, 19 percent are daily smokers, and 14 percent live in poverty.
    Obesity rates are increasing dramatically. These rates used to be fairly【C3】______ : Between 1960 and 1980, there was only a minor increase in the number of Americans who were overweight or obese. Since 1980, however, not only has the percentage increased, but much of the increase is【C4】______ in the "obese" category, which grew by 60 percent between 1991 and 2000. Because this increase is relatively  【C5】______ , its full impact is not known. Some【C6】______ conditions take years to develop. Current research may, if anything, understate the public health consequences of obesity.
    The past 20 years have witnessed a significant【C7】 ______ change: Americans are exercising less while maintaining at least the same caloric intake. Desk jobs, an increase in the number of hours devoted to television watching, and car-friendly urban environments are some of the environmental changes that have combined to【C8】______ physical activity.
    These changes affect other industrialized countries, too. For example, over the past 20 years, Great Britain and Germany have experienced obesity.【C9】______ rates similar to those in the United States. But because they started from lower levels, obesity in those countries has not yet become an epidemic level【C10】______ to public health.
A) concentrated                         I) reduction
B) recent                               J) approximately
C) satisfactorily                       K) growth  
D) lifestyle                            L) threat
E) negative                             M) quick
F) divided                              N) discourage
G) chronic                              O) stable
H) enhance
【C8】
选项
答案N
解析 整个段落都是讲美国人越来越肥胖的原因以及生活方式的重大变化，这种变化综合起来就会阻碍人们进行体育运动，因此只有动词discourage“阻碍”能概括这一意思，Reduction虽然有“减少，降低”的意思，但它是名词，放在此处不符合语法。
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